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Did CAS develop the clustering algorithm that creates the Research Landscape in STN AnaVist?

April 26, 2017ALGORITHM anavist CAS clustering creates develop landscape Research STN

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Did CAS develop the clustering algorithm that creates the Research Landscape in STN AnaVist?

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CAS licensed visualization software developed by Sandia National Laboratories as the base software for generating the Research Landscape. The software was significantly enhanced to improve visualization results, utilizing the expertise of our database building staff and scientists: • CAS vocabulary to standardize the clustering concepts • A stopword list to improve cluster results for sci-tech searches These enhancements allow for the software to produce more scientifically relevant clusters that are focused on scientific and intellectual property information. STN AnaVist uses force-directed placement for the text clustering. Force-directed placement is a fast clustering method, most notably with larger answer sets. To learn more about the clustering method used in STN AnaVist, refer to: • Visualizing an Auto-Generated Topic Map (PDF, 429 KB) by Nadine Amende and Stefan Groschupf (2003, technical report, Halle/Saale) • Domain Visualization Using VxInsight for Science and Technology Man